http://www.insidefacebook.com/2011/07/04/zoosk-page-tabs-branchout-phrases-and-more-on-this-week%e2%80%99s-top-20-facebook-apps-by-mau/?utm_source=twitterfeed&utm_medium=twitter&utm_campaign=Feed%3A+InsideFacebook+%28Inside+Facebook%29